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http://dx.doi.org/10.9721/KJFST.2019.51.5.486

Antioxidant activities of ethanol extracts from barley sprouts  

Chae, Kyu Seo (Berry&Biofood Research Institute)
Ryu, Eun Hye (Berry&Biofood Research Institute)
Kim, Ki Deok (Gochang County Rural Development Department)
Kim, Yong-Suk (Department of Food Science and Technology, Chonbuk National University)
Kwon, Ji Wung (Berry&Biofood Research Institute)
Publication Information
Korean Journal of Food Science and Technology / v.51, no.5, 2019 , pp. 486-491 More about this Journal
Abstract
Phenolic compounds and antioxidant activities of ethanol extracts from barley sprouts were evaluated in this study. Barley sprouts were extracted using water and ethanol in various concentration (25, 50, and 75%) using reflux extraction methods. Ultra performance liquid chromatography (UPLC) analysis showed that barley sprouts are mainly composed of rutin, gallic acid, ferulic acid, and ${\rho}$-coumaric acid. The 75% ethanol extracts had higher total polyphenol contents ($44.01{\pm}1.32mg/g$) and total flavonoid contents ($102.96{\pm}2.49mg/g$). 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity ($EC_{50}$ value: $1.65{\pm}0.02mg/mL$) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt radical scavenging activity ($EC_{50}$ value: $1.67{\pm}0.02mg/mL$) of the 75% ethanol extracts of barley sprouts were found to be the most effective. The 75% ethanol extracts of barley sprouts exhibited a strong reducing activity and ferric reducing antioxidant activity. As a result, the 75% ethanol extracts of barley sprouts showed stronger antioxidant activity than other extracts.
Keywords
antioxidant activities; ethanol extracts; phenolic compounds; barley sprouts;
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